<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>valueof toString</title>
</head>
<body>
    

    <script>
        
        let obj = {
            name: 'ws',
            age: 28
        };

        console.log(obj.valueOf());
        console.log(obj.toString());        
    </script>

</body>
</html>